I rate it a 2 as well.

You need a torx bit, allen wrench, C clamp for the piston, and some penetrating oil.

Torx for removing the caliper. Wish I had the torx size for you.

Allen wrench for the single rotor hold down screw. Mine were frozen on with rust. A little PB Blaster or whatever it's called in the lug bolt holes and a couple of minutes later, they practically dropped off.

It took too much arm straining to get those pistons back in. My neighbor's C clamp made it WAY easier. Keep your pad faces and rotors free of contaminants.

Don't forget that the first time you use the brakes, they are not going to be 100%. Gotta get those pad faces back down to the rotors after pushing the pistons back. So, don't back out of your driveway balls to the wall.